Pipe-covering



I. L. MARSH'.

PIPE COVERING. APPLICATION FILED JAN.2, 1920.

1,355,083. Pat nted Oct. 5,1920.

NVENTOR.

UNITED STATES PATENT OFFICE;

ISOM n. MARSH, or LOS ANGELEs, cemronnm, ASSIGNOR or oNE-HALrroAnLAN A.

' ANDERSQN, oF Los ANGELES, CALIFORNIA.

?IP -eminem&

Specfication of Letters Patent.

Patented Oc't. 5, 1920;

Application filed Januar 2, 1920. Serial m. 349,1 1o.

To aZZ whom z'tjmc'y conoern:

Be it known tha-t I, IsoM MAnsH, a citizen of the United States, residing at Los Angeles, in the County oi' Los Angeles and State of California, have invented new and useful Improvements in Pipe-Coverngs, of which the following is a specification.

This invention relates to pipe coverings and consists of the novel features herein shown, described and claimed.

Broadly, my invention relates to a pipe covering wherever a pipe covering is needed.

Specifically, my object is to make a fire proof pipe covering for the blow-out pipes of steam boilers.

Figure 1 is a fragmentary sectional elevation of a steam boiler and furnace showing a pipe covering embodyng the princples of my inventon applied to the blowout pipe.

Fig. 2 is a fragmentary sectional detail upon an enlarged scale showing the pipe coverng applied to the blow-out pipe.

Fig. 3 is a perspective showing two mating sections of the pipe covering ready to go together.

Usually, in a steam plant the boiler 1 has a blow-out pipe 2 eXtending downwardly from the bottom of the boiler through the back of the furnace chamber 3 and outwardly through the furnace back 1. The blow-out pipe 2 is necessarily in the heated area of the chamber 3 and it is necessary to protect the pipe from being highly 'heated and thus rapidly destroyed. lt has been usual to build a wall of fire brick to protect this pipe, but this wall takes up considerable space in the furnace. The chamber 3 is hard to build and maintain and is otherwise obi ectionable.

The specific object of my invention is to apply the fire proof pipe ccvering 5 to the blow-out pipe 2 so far as it extends into or through the chamber 3, and the details of the fire proof covering 5 are as follows:

The blow-out pipe 2 is covered with the usual pipe covering 6, said pipe covering 6 being especially designed to insulate the pipe and prevent or reduce radation, and not well calculated to eXclude heat. The fire proof pipe covering 5 is, or may be ap'- plied around the cover'ng 6; the special function of the cover'ing 5 being to exclude heat and protect the covering` 6 and protect the pipe 2. i

The fire proof pipe covering is' formed in lengths 7, 8, 9,10 11,12 and s'o: on. 'The lengths .7, 8, 9, 11 and 12 aresubstantially alike. andare constructed as .shown in Fig. 3. Each length is' :formed in two sections 13 and 14 meeting on diametrical longitudinal lines, each piece being substantially enough to stand the high heat of the furnace. I Arcuate tongue beads 19 and 20 eX- tend from corresponding ends of the mating sections 13 and 1 1, and grooves 21 and 22 are formed in the opposite ends of the sections so that the tongues of one section will fit in the grooves of the end of an adjacent section, and when the o posite sections have been intermeshed and the lengths applied to the pipe and pushed endwise together to bring the tongues and grooves together, the tongues and grooves Will be used for holding the sections from separating laterally.

The length 10 is an elbow and is made in two mating side sections 23 and 24 fitting together sidewise, the meeting faces 25 of the 'sections 23 and 24 being tongue and grooved. The elbow sections are made right and left and have a tongue 26 on one end and a groove 27 on the other end.

In ap alying the pipe covering as in Fig..

1, the el ow sections are first applied then the sections of the lengths 9 and 11 are applied and pushed toward the elbow sections, and when the tongue 26 enters the grooves 21 and 22 oi: the length 11 and the tongues 19 and 20 oi: the length 9 enter the groove 27, the'lengths 9 and 11 hold the elbow sections together.

After the fire proof pipe covering 5 has been applied it may be held from endwise reciprocation nanysutabie way and this Will 'hold the coverng securely in place.

Various changes may be made Without departng from the sprt of my invention as claimed.

I claim: i

1. A pipe protective covering comprising sections of'protecting tubng, each section consstng of separable halves meeting on longitudinal 'diametricaliy opposite edges; the longitudinal edges of ,the halves of each section being provided With teeth arranged transversely and bodily inclined toward one -end of the section.

2. A pipe protectve covering comprising sections of protectng tubng, each'secton consstng of separable halves meeting on longtudinal diametrically opposite edges;

' name 'to this specification.

transversely and bodily inclined toward one i end of the section; the cordnate sections o having ntei locking means on their contigu ous ends to prevent lateral separaton of the halves of the sections.

3. A pipe protective covering comprising sections of protecting tubing, each section consisting of separable parts meeting on longitudinal edges; the longtudinal edges of the parts of each section being provided With teeth arranged itransverseiy and bodily `inclined toward one end of the section. i v

In* testimony whereof I have signed my IsoM L MARSH. 

